Shotgunworld.com Has a forum on the weapon................................................................................(this is an online ad, to give you an idea about value only)Ithaca 51 Featherweight 12Ga Auto

Seller: Wildwood Inc ..............................................................................................................................................................................................................................The Ithaca model 51 was not a very dependable gun, according toBruce Buck, who used it extensively for competition shooting.He broke many parts with it, and had trouble keeping it operating. One part subject to break is the action bars thatpush back the bolt upon firing. These are not available nowas parts and will have be welded if broken or otherwise buildsome replacements.( from a shotgunworld forum).....................................................................................................................................................................................................Likewise, post your question(s) about your Ithaca Model 51 on SGW's Ithaca Shotguns forum (not the official Ithaca Gun Company's forum as your gun predates this company). Again, the regulars there have a lot of information and advice.